EA036897B1 - Device and method for regulating heating systems - Google Patents

Abstract

The invention relates to a regulating device for regulating heating systems, comprising a body (2) provided with at least one inlet (3), an outlet (4), and an interception area interposed between the inlet (3) and the outlet (4), in such a way that the latter can be selectively set into fluid communication with each other. There is a valve element (10) that is operatively active in the interception area and that operates in a plurality of operating configurations so as to vary the flow rate of fluid passing from the inlet to the outlet as a function of the difference in temperature between a perceived temperature of the fluid at the inlet and a reference temperature at which the valve element is configured. The plurality of operating configurations comprise at least one maximum aperture configuration, in which there is a maximum flow rate of fluid passing from the inlet to the outlet, and a closed configuration, corresponding to a state in which the detected temperature of the fluid at the inlet is equal to or higher than the reference temperature. In the closed configuration, there is a residual flow rate of fluid transferred from the inlet to the outlet and this residual flow rate is greater than zero.

Description

The object of the present invention is a regulating device for regulating heating systems, a heating system containing this device, and a method for regulating heating systems.

In particular, the invention relates to a control device for controlling the temperature and flow of a fluid, generally hot water, in space heating systems in residential or commercial buildings or for other purposes. Thus, the present invention relates to the field of heating systems.

It is known that heating systems for heating buildings are fundamentally subdivided into high-temperature and low-temperature systems. High temperature systems essentially comprise a boiler, a number of heating elements (including radiators, thermosyphons, heaters, convectors, etc.) located in various areas of the building, and a plurality of manifolds and pipes connecting the boiler and radiator elements. On the other hand, low-temperature systems comprise, in addition to the boiler, a plurality of tube-like radiator elements, which are usually placed under flooring of rooms, and at least one pair of manifolds connecting the radiator elements to the boiler. While the systems of the first type operate with water at high temperatures, as a rule, of the order of 60-80 ° С, the systems of the second type must necessarily operate at lower temperatures, for example, of the order of 30-40 ° С, given that at higher temperatures there is a risk of damage to the floor covering. Mixed heating systems are also known which comprise a high-temperature circuit and a low-temperature circuit suitably connected to each other and various types of radiator elements.

Low temperature parts of systems are also known, i. E. with floor pipes, inside a system operating at high temperatures and therefore equipped with a boiler that supplies high temperature water for the operation of radiators, thermosyphons or convectors. In this case, the low-temperature parts of the system must contain suitable devices capable of controlling and regulating the temperature of the fluid at various points in the system (i.e. high temperature in parts containing radiators or thermosyphons and low temperature in parts containing radiator floor elements).

This is particularly the case when buildings are undergoing renovations or renovations, which may involve laying new floors or creating new rooms (such as bathrooms) or dividing existing spaces. In this case, it may be preferable - in those parts that are being repaired or reconstructed - to opt for radiator floor elements, while maintaining the original boiler and using the already existing high-temperature water supply used for radiator elements that are not floor elements (radiators or thermosyphons). To do this, while avoiding the high temperature water causing pipe failures or floor destruction, it is necessary to install appropriate system equipment specifically for floor heating (e.g. mixing system, fluid distributor, etc.), which is expensive and complex. and may not be economically viable if only part of the building is being repaired or reconstructed (for example, just one room). In these cases, the known solution is to divert the new branch directly from the high temperature circuit (already present in the system) and continue this new branch with a radiator cavity tube. The latter follows its path under the flooring to then return back to the existing contour. It is clear that this straight leg requires a means to enable it to obtain and maintain the correct water temperature in the radiator pipe, which should be lower than the water temperature in the high temperature circuit.

According to known solutions, such means can be a valve device, which in this field is called a temperature limit controller. This device consists of an in-line thermostatic valve equipped with a temperature sensing element that controls the opening or closing of the valve in proportion to the difference between the temperature of the fluid in the line and the control temperature to which the valve has been set: the greater the temperature difference, the greater the opening of the valve and, therefore, the supply of water passing through it. The limit temperature controller generally contains a control temperature selection head; when the temperature of the water in the line to which the controller is installed reaches the control temperature, the valve closes completely and no water flows through.

In the prior art, the limit temperature controller is located at the outlet of the floor radiator line, before returning to the boiler, while the flow control elements are not located at the inlet of the radiator line, which is directly diverted from the high temperature circuit. The control temperature of the controller is then set to, for example, about 30 ° C. When the system is turned on (with a cold floor line), high temperature water (eg 60-70 ° C) from the high temperature circuit enters the floor line and starts heating it. Therefore, there is an initial temperature peak in the radiator line, which, however, has a short duration, since at the outlet of the radiator line, the limit temperature controller begins to receive a flow of hot water and gradually closes until it closes completely, while blocking the circulation of the flow in the floor line. This is prevent

- 1 036897 rotates the entry of additional high temperature water into the radiator line and damage to the floor covering or excessive heating of the room. As the process continues inside the floor line and over time, the hot water in the floor line gives off heat to the room and thus cools. As a result, the temperature sensed by the limit temperature controller drops below the control temperature, which was set, for example, about 30 ° C. Consequently, the controller opens again and allows some water to leave the floor line, which attracts an equal volume of high temperature incoming water that flows through the floor line and maintains the correct heating level. During operation, the system finds a balance in which the flow of water that the controller allows to leave the line for a period of time is very limited; therefore, even if the temperature of the incoming water is always very high, its flow rate is limited. In general, due to the temperature limit controller controlling the flow of water through the radiator line, the resulting average temperature of the latter is suitable for the floor system (i.e. not too high) and for efficient heating of the space (i.e. not too low).

The solution described above thus allows a part of the floor heating system to be connected directly to a system that operates at high temperatures, thereby obtaining the correct temperature on the floor covering every time.

At the same time, the applicant found that the known solution is not without its drawbacks and can be improved in certain aspects.

Indeed, the operation of the temperature limit controller theoretically allows the point of hydrodynamic equilibrium to be found between the water (which has given off heat and thus reduced its temperature) leaving the radiator line and the water (at high temperature) re-entering the radiator line. In practice, however, the limit temperature controller is connected to other components of the circuit or is enclosed within a heating installation, which contains additional valves, manifolds, pipes, pumps, etc., necessary for the operation of the entire heating system, which often also includes parts that operate at high temperatures, and parts operating at low temperatures. The heating installation is usually enclosed in a special cabinet that is located in the room, or attached to the wall or built into a niche arranged in the wall. The heating unit also has a door that allows access to it.

Thus, in this state, the limit temperature controller operates in contact with or near the elements of the system in which the high temperature water flows, such as pipes or valves of the high temperature heating part, and which may even be heated to a temperature of 80 ° C or more. Therefore, the temperature inside the entire heating system tends to rise (for example, up to and above 40 ° C), and the case of the temperature limit controller is also exposed to unwanted heat. This is a serious hindrance to the correct operation of the floor radiator pipe. Indeed, suppose that the limit temperature controller receives water from the end of the radiator line at a temperature equal to the control temperature at which it was installed, and that, therefore, it is brought into the closed position. Over time, the floor radiator pipe cools (as it gives off heat to the room), and the controller must perceive water (entering it) at a lower temperature. However, the water stopped at the controller inlet is heated by the overall heating of the heating unit (i.e. the entire cabinet), and the sensor inside the controller continues to sense the high water temperature despite the floor line being cold. This prevents the limit temperature controller valve from opening and therefore water cannot leave the radiator line and new hot water cannot enter from the branch point from the high temperature circuit. The result is a drop in the temperature of the radiator line and therefore insufficient heating of the room, even if the entire system is actually functioning.

Note that heating inside the heating unit and the resulting unwanted locking of the temperature limit controller, although the radiator line is cooled (and needs some high temperature water supply), are present regardless of the type or structure of the heating unit and regardless of how high-temperature parts of the system are working.

This disadvantage is of great importance in places with very harsh outdoor temperatures, when systems must necessarily work with water of very high temperatures; this increases the overheating of the components inside the heating system and therefore the temperature limit controller. In some cases it is necessary to wait until the heating unit has cooled down before relying on correct operation of the limit temperature controller again.

In this situation, the present invention in its various aspects and / or embodiments is directed to a device and method for regulating heating systems that are able to overcome one or more of the above disadvantages.

An additional object of the invention is to provide a control device for regulating heating systems, which is capable of working correctly inside heating installations, or

- 2 036897 near heating system components operating at high temperatures.

An additional object of the invention is to provide a device and method for regulating heating systems that will effectively connect a floor radiator pipe to a high-temperature circuit, ensuring proper control of operating temperatures and flows inside the pipe.

An additional object of the invention is to provide a control device for regulating heating systems, which is characterized by a high level of versatility and is able to adapt to a large number and different types of different heating installations.

An additional object of the invention is to provide a control device for regulating heating systems, which is characterized by a high level of operational reliability, and / or is little susceptible to damage and malfunctions, and / or allows simple and quick maintenance and replacement.

An additional object of the invention is to provide a control device for regulating heating systems, which is characterized by a simple and rational structure.

An additional object of the invention is to provide a control device for regulating heating systems, which is characterized by limited production costs in relation to the proposed performance and quality.

A further object of the invention is to provide alternative solutions to the prior art for the implementation of control devices for regulating heating systems and / or opening up new areas of design.

An additional object of the invention is to provide a control device that is capable of making it possible to design new heating systems.

These and other objects, which will become apparent from the following description, are essentially achieved by a regulating device for regulating heating systems, a heating system containing this device, and a method for regulating heating systems described in the appended claims, each of which can be considered both separately (without the corresponding dependent claims), and in any combination with other claims, as well as corresponding to the following aspects and / or embodiments, in various combinations, described in the above claims.

In a first aspect, the invention relates to a control device for regulating heating systems, comprising:

a device body provided with at least one inlet that is designed to be connected to a line so as to receive a fluid from it, an outlet that is intended to be connected to a corresponding line so as to direct a fluid into it, and an overlap region inside said body, located between said inlet and outlet and connecting them so that it is possible to selectively establish a fluid communication between said inlet and outlet;

a valve element housed at least partially inside the body of the device and functioning in said overlap region, wherein said valve element is configured to operate in a plurality of operating configurations so as to vary the flow rate of fluid flowing from said inlet to said outlet through said overlap region, depending on the temperature difference between the perceived temperature of the fluid at said inlet and the control temperature to which the valve element is configured.

In one aspect, said plurality of operating configurations comprises (or ranges between) at least one maximum opening configuration in which the flow rate of fluid flowing from said inlet to said outlet is maximum, and a closed configuration corresponding to a state in which said the measured inlet fluid temperature is equal to or higher than said reference temperature.

In one aspect, said closed configuration has (or is provided) with a residual flow rate of fluid from said inlet to said outlet, said residual flow rate being strictly greater than zero.

In one aspect, the valve element comprises means for selecting said control temperature such that when fluid entering said inlet reaches or exceeds this control temperature, the valve element is brought into said closed configuration.

In one aspect, said residual fluid flow rate from said inlet to said outlet in said closed configuration is between 1 and 10 L / hr.

In one aspect, said residual flow rate of fluid transferred from said inlet to said outlet in said closed configuration is between 2 and 8 L / hr.

In one aspect, said residual fluid flow rate from said inlet to said outlet in said closed configuration is 3 to 6 L / hr.

In one aspect, said residual fluid flow rate from said inlet to said outlet in said closed configuration is 3.5 to 5 L / hr.

In one aspect, said valve element comprises a thermostatic element (or thermo

- 3 036897 static valve) inserted into said housing and containing a movable shutter configured to approach and move away with respect to the passage section formed in said overlap region so as to change said flow rate of fluid flowing from said inlet to said outlet in accordance with the aforementioned many operating configurations.

In one aspect, said valve is configured to move closer to the port as the difference between the perceived inlet fluid temperature and said reference temperature decreases, decreasing said flow rate, and to move further away from the port as the difference between the perceived inlet fluid temperature and said control temperature, increasing said flow rate.

In one aspect, said closed configuration has a controlled fluid leak in said valve element in the overlap region, said leak determining the passage of said residual fluid flow rate from said inlet to said outlet.

In one aspect, said leakage provides said residual fluid flow rate in each configuration during operation of the valve element, in particular in said closed configuration.

In one aspect, said valve member comprises a temperature sensitive thermostat, said thermostat being resizable depending on the perceived temperature, said closure being associated with or attached to said thermostat.

In one aspect, the thermostat is axially inserted into said housing so as to occupy at least partially said overlap region and is configured to vary its own length depending on the temperature of the fluid at said inlet perceived by the thermostat itself.

In one aspect, the thermostat increases in length as the perceived temperature increases, bringing said seal closer to the flow section, and decreases in length as the perceived temperature decreases, moving said valve away from the flow section.

In one aspect, the closure moves to abut said flow section when the valve member is brought into said closed configuration.

In one aspect, the closure is substantially disc or ring shaped and is positioned around the thermostat, preferably coaxially with respect to the longitudinal extension of the thermostat.

In one aspect, the closure has a bottom surface facing said flow section formed in the overlap region, and preferably having a rounded head shape, and an upper surface opposite said bottom surface.

In one aspect, the thermostat is positioned in said overlap region so as to pass through said passage section leaving a free passage, preferably annular, between the thermostat and the inner walls of the device body or valve element.

In one aspect, said bottom surface moves away from said passage section as the length of the thermostat decreases (as the perceived temperature decreases), approaches the passage section as the length of the thermostat increases (as the perceived temperature increases), and moves so as to abut the preferably ring-shaped perimeter surface said passage section when the valve member is brought into a closed configuration.

In one aspect, said bottom surface has at least one recess recessed into the bottom surface (toward the top surface) such that when the closure abuts the perimeter surface of the bore, i.e. when the valve member is brought into a closed configuration, between the perimeter surface and said at least one groove forms a free channel in said passage section (despite the fact that the gate is adjacent to the perimeter surface of the passage section) through which said residual fluid flow rate passes from the inlet to the outlet of the device.

In one aspect, the device housing comprises a bypass channel or passage that extends between, connects, and connects, and is configured to transmit said residual fluid flow rate in each operating configuration of the valve element, in particular in said closed configuration.

In one aspect, said bypass conduit is formed in or near said overlap region.

In one aspect, said bypass passage is formed at or near said passage section.

In one aspect, said bypass channel is formed within said housing, in the region of the thermostatic valve, in particular in the region of said thermostat and / or shutter.

In one aspect, said bypass conduit is configured to transfer fluid present immediately upstream of said thermostatic valve along

- 4,036897 towards said outlet with a flow rate equal to said residual flow rate of the fluid.

In one aspect, said residual flow rate of fluid from said inlet to said outlet is present in each operating configuration of said valve element.

In its independent aspect, the invention relates to a heating system comprising a control device for regulating heating systems in accordance with one or more of the above aspects.

In one aspect, the heating system comprises at least one radiator pipe intended to be installed in a floor area and configured to heat a room, said radiator pipe extending between an inlet end intended for direct fluid connection (hydraulic connection) to a source of high temperature fluid medium, so as to receive from it a high-temperature fluid, and an outlet end intended for fluid connection (hydraulic connection) with a low-temperature circuit directed to the heat generator, so as to receive a low-temperature fluid therein, and said pipe contains between said inlet the end and the said output end is a twisted part made with the possibility of transferring radiant heat from the fluid flowing in it to the outside.

In one aspect, a control device for regulating heating systems is located downstream of said coiled portion and upstream of said outlet of the radiator tube so as to block the flow of fluid flowing in said tube, wherein the inlet of the control device receives fluid coming from of said twisted part, the device transmits a flow rate for this fluid to the outlet of the device, taking into account the operating configuration of the valve element of the device, and the outlet of the device is fluidly connected to said outlet of the radiator tube.

In one aspect, the heating system further comprises a thermostatic valve for controlling the space temperature, preferably a thermostatic head, located along said radiator tube at a point downstream of said control device, said thermostatic valve for controlling the space temperature configured to select a desired space temperature , in which the heating system is installed, and, therefore, adjusting the flow rate of the fluid circulating in the radiator pipe, depending on or proportionally to the difference between the temperature recorded in the space and the mentioned desired temperature in the space.

In its independent aspect, the invention relates to a method for regulating heating systems, comprising the steps of:

installing a radiator pipe intended to be installed in the floor area and configured to heat the space so that said radiator pipe extends between an inlet end that is intended to be directly fluidly connected to a high-temperature fluid source so as to receive a high-temperature fluid therefrom, and an outlet end, which is intended to be connected by a fluid medium with a heat generator so as to receive a low-temperature fluid therein, said pipe comprising between said inlet end and an outlet end a twisted part configured to transmit radiant heat from the fluid flowing therein ;

installing at least one control device for heating systems in accordance with one or more of the above aspects.

In one aspect, at said step of installing at least one device, the latter is placed downstream of said coiled portion and upstream of said outlet end of the radiator tube so as to block the flow of fluid flowing in said tube, while the input of the control device receives fluid coming from said twisted part, and the device transmits the flow rate of this fluid to the outlet of the device, taking into account the operating configuration of the valve element of the device, while the outlet of the device is connected by fluid with the said outlet end of the radiator tube.

In one aspect, the method further comprises the step of circulating a fluid in said heat sink tube, wherein the flow rate of the fluid flowing from the inlet to the outlet of the control device through said overlap region is dependent on or proportional to the temperature difference between the perceived temperature of the fluid at said inlet and the control temperature, to which the valve element is configured, wherein the flow rate passing from the inlet to the outlet of the regulating device and transmitted towards the said outlet end of the radiator tube is equal to the incoming flow rate at the said inlet end of the radiator tube.

In one aspect, said step of circulating a fluid in said radiator tube comprises the step of maintaining a residual flow rate of fluid from an inlet to an outlet of the control device greater than zero (at least) when the valve element is on

- 5 036897 crumpled closed configuration.

In one aspect, in said step of maintaining the residual fluid flow rate, the residual fluid flow rate is 2 to 8 L / h and / or 3 to 6 L / h and / or 3.5 to 5 L / h.

In one aspect, in said step of maintaining a residual fluid flow rate, that residual fluid flow rate is continuously circulated through the control device even when the latter is in a closed configuration.

In one aspect, in said step of maintaining the residual fluid flow rate, the passage of the fluid from the inlet to the outlet is due to fluid leakage at said valve element in the overlap region.

Each of the above aspects of the invention may be considered separately or in combination with the features of any of the claims or other described aspects.

Other characteristics and advantages of the invention will become clearer from a detailed description of several non-exclusive examples of embodiments thereof, including a preferred embodiment of an apparatus and method for controlling heating systems and heating systems in accordance with the present invention. This description is given below with reference to the accompanying drawings, which are provided solely to illustrate exemplary and, therefore, non-limiting options, and in which:

fig. 1 schematically illustrates one possible embodiment of a heating system according to the present invention, comprising a control device according to the present invention;

fig. 2 is an enlarged view of a portion of the heating system of FIG. one;

fig. 3 shows a possible embodiment of a control device for regulating heating systems according to the present invention, inserted, by way of example, into the body of a heating installation, which is part of a possible embodiment of a heating system;

fig. 4 shows elements, in particular a control device, contained in the housing of FIG. 3;

fig. 5 is a V-V section through the elements of FIG. four;

fig. 5A is an enlarged view of a section of the regulating device of FIG. five;

fig. 6 is a top view of the components of FIG. four;

fig. 7 is a section along a plane in VII-VII of the elements of FIG. 6 with the valve element of the control device in a partially open operating configuration;

fig. 7A is an enlarged view of a section of the regulator of FIG. 7;

fig. 8 is a section along the plane VII-VII of the elements of FIG. 6 with the valve member of the control device in a closed configuration;

fig. 8A is an enlarged view of a sectional view of the regulating device of FIG. 8;

fig. 9 shows a possible embodiment of a control device for regulating heating systems according to the present invention, inserted, by way of example, into a heating installation which is part of a possible embodiment of a heating system;

fig. 10 shows a control device contained in the heating installation of FIG. 9;

fig. 11 is a section along the XI-XI plane of the adjusting device of FIG. ten;

fig. 11A is an enlarged view of a sectional view of the control device of FIG. eleven.

In the drawings, reference numeral 1 generally refers to a regulator for regulating heating systems in accordance with the invention. In general, the same reference designations are used for identical or similar elements, possibly also in their variants.

The device 1 is intended to be connected to a heating system for the purpose of controlling the exchanged fluid flows at different temperatures. More specifically, the device 1 is preferably applicable as part of a heating system that is intended to be installed in the floor area and is configured to operate with low-temperature water, but to which a high-temperature water heating circuit is also connected.

In this text, in accordance with the terminology accepted in this field, the term low-temperature water means water for heating spaces, which generally has temperatures of about 25-50 ° C, while the term high-temperature water means water supplied from a boiler or similar blocks or circulating in a high-temperature system and generally having a temperature of about 60-80 ° C.

First of all, the control device 1 comprises a housing 2 provided with at least one inlet 3, an outlet 4 and an overlap (or passage) region 5, as shown in FIG. 1, 3, 4, 7, 8 and 10.

The inlet 3 is intended to be connected to a line so as to receive a fluid from it, and the outlet 4 is intended to be connected to a corresponding line so as to direct the fluid into it; the device is thus configured to enable appropriate

- 6 036897 to regulate the flow of fluid in the direction from the inlet to the outlet. The overlap region 5 is located within the housing 2 and is placed between the inlet and outlet, connecting the inlet and outlet in such a way that a fluid communication between the inlet and outlet can be selectively established.

As used herein, the term fluid generally refers to water in a heating or plumbing system.

The inlet and outlet are external openings in the body of the device, each of which has corresponding means of connection to lines, pipes or other elements of piping systems; such connecting means can be selected from known means such as threads, press fittings, etc.

The device 1 further comprises a valve element 10, which is at least partially housed within the housing 2 and which functions in the overlap region 5. The valve element 10 is configured to function in a plurality of operating configurations so as to vary the flow rate of the fluid flowing from the inlet 3 to the outlet 4 through the overlap region 5, depending on the temperature difference between the perceived temperature of the fluid at said inlet and the control temperature, on which the valve element is configured.

The set of working configurations contains at least:

a maximum opening configuration in which the flow rate of the fluid flowing from the inlet 3 to the outlet 4 is maximum; and a closed configuration corresponding to a state in which the sensed inlet fluid temperature is equal to or higher than the reference temperature.

Essentially, device 1 is primarily a limit temperature controller in that it is capable of controlling the flow rate through it from inlet to outlet in proportion to the difference between the inlet fluid temperature and the reference temperature; the latter is the ultimate temperature, considering that when the incoming fluid reaches the control temperature, the valve element is brought into a closed configuration.

In addition, the device 1 according to the invention is designed in such a way that in said closed configuration there is a residual flow rate of the fluid transmitted from the inlet to the outlet, and this residual flow rate is strictly greater than zero.

Within the framework of the invention, the expression depending on the temperature difference may mean a value proportional to the temperature difference. In addition, the expression perceived inlet fluid temperature may mean the value of the inlet fluid temperature detected by the valve element.

Preferably, said residual flow rate of fluid transferred from inlet 3 to outlet 4 in a closed configuration is 1 to 10 l / h.

Said residual flow rate of the fluid transferred from the inlet to the outlet can be limited to a range of 2 to 8 l / h, or a range of 3 to 6 l / h, or even a range of 3.5 to 5 l / h. h.

As shown by way of example in FIG. 7 and 8, the valve element 10 preferably comprises a thermostatic valve 11 (or thermostatic element) inserted into the housing and containing a movable gate 15 configured to approach and move away with respect to the flow section 20 formed in the overlap region 5 to vary the flow rate the flow of fluid from inlet 3 to outlet 4 in accordance with said plurality of operating configurations.

More specifically, the valve 15 preferably moves closer to the flow section 20 as the difference between the perceived temperature of the fluid at the inlet 3 and the reference temperature decreases, decreasing the flow rate, and moves away from the flow section 20 as the difference between the perceived temperature of the fluid at the inlet 3 and the reference temperature increases. temperature, increasing the flow rate.

According to a possible embodiment, which is explained in detail below, in the closed configuration there is a controlled leakage of fluid in the valve member in the overlap region; this leakage determines the passage of said residual fluid flow rate from inlet to outlet.

Leakage of fluid preferably occurs between the valve 15 and the flow section 20, and this leakage defines the passage of the said residual flow rate of the fluid from the inlet to the outlet.

Within the framework of the invention, the expression controlled fluid leakage means the intentional leakage of fluid, that is, the leakage of a suitable amount of fluid. As such, said leakage ensures that a residual fluid flow rate is transmitted in each operating configuration of the valve element, in particular in a closed configuration.

The thermostatic valve 11 preferably contains a temperature-sensitive thermostat 12. This thermostat 12 is configured to change its size depending on the temperature it senses. The thermostat may be of a known type, for example a solid-filled thermostat, gas or liquid type. The shutter 15 is preferably associated with a thermostat 12 or

- 7 036897 is attached to it.

The thermostat 12 is preferably axially inserted into the housing 2 so as to occupy at least partially the overlap region 5 and varies in length depending on the temperature of the fluid at the inlet 3.

More specifically, the thermostat increases in length with increasing perceived temperature, bringing the valve 15 closer to the passage section 20, and decreases in length with a decrease in the perceived temperature, moving the gate 15 away from the passage section 20.

The valve element 10 preferably comprises means for selecting said control temperature, so that when the fluid entering the inlet 3 reaches or exceeds this control temperature, the valve element is brought into a closed configuration.

Preferably, the control temperature selection means may comprise a head 13 that acts on the thermostat 12 to change its axial position within the device body so as to bring the shutter 15 closer or further with respect to the passage section, where the approach of the shutter determines the decrease in the control temperature, and the removal of the shutter determines increase in control temperature. In fact, removing the weir from the port section requires more thermal expansion to achieve a closed configuration, and therefore a greater increase in inlet temperature. Conversely, moving the gate closer to the port section requires less thermal expansion to achieve a closed configuration and therefore less increase in inlet temperature.

So, device 1 works as follows: it is connected to a line that supplies water to inlet 3, and to an additional line that receives water from outlet 4, while the control temperature is set, for example, due to the action of the head. The valve element 10 is wetted with water entering the inlet 3 and senses its temperature. The valve element operates in its original operating configuration according to the difference between the inlet water temperature and the control temperature, i.e. passes a higher or lower flow rate of fluid from inlet 3 to outlet 4.

As the temperature at the inlet gradually rises and approaches the set value, the thermostat 12 increases in length. The increase in the length of the thermostat determines the lowering of the shutter 15 until it abuts against the passage section, that is, until the closed configuration is reached; the closed configuration is maintained for inlet temperatures equal to or higher than the set control temperature (which is therefore the limit temperature in all respects). In any case, in this configuration, the device 1 according to the invention comprises a passage for a residual flow rate of water, for example by means of a leak between the seal and the passage section.

The residual flow rate passage can be advantageously implemented in the embodiment of FIG. 4-8, which contains a valve structure capable of realizing controlled leakage.

In these figures, various components of the device 1 are visible: housing 2, inlet 3, outlet 4, overlap region 5, valve element 10, thermostatic valve 11, thermostat 12, head 13, shutter 15 and bore 20.

The section in FIG. 7 shows the device in a partially open configuration. It can be noted (see detail in Fig. 7A) the axial distance available between the valve and the passage section, which allows the passage of water flow from the inlet to the outlet.

The shutter 15 preferably has a substantially ring (or disk) shape and is located around the thermostat 12, preferably coaxially with respect to the longitudinal extension of the thermostat.

The closure preferably has a bottom surface 16 facing the flow section 20 formed in the overlap region 5, and preferably having a rounded head, and an upper surface 18 opposite the bottom surface 16.

As shown in FIG. 7 and 8, the thermostat 12 is preferably located in the overlap region 5 so as to pass through the passage section 20, leaving a free passage, preferably annular, between the thermostat and the inner walls of the housing 2 of the device or valve element 10.

In accordance with the above description of the influence of the water temperature at the inlet on the operation of the valve element, the lower surface 16 moves away from the passage section 20 as the length of the thermostat 12 decreases (with a decrease in the perceived temperature), approaches the passage section 20 as the length of the thermostat increases (with an increase in the perceived temperature) and moves so as to abut the perimeter surface 25 of the passage section 20 when the valve element is brought into a closed configuration.

The perimeter surface 25 is preferably annular and extends in a plane substantially perpendicular to the longitudinal extent of the device body and the thermostat, that is, in a plane orthogonal to the direction of expansion and contraction of the thermostat.

Essentially, the perimeter surface 25 that extends around the bore 20 is a seal seat, a seat that is at least partially adjacent the lower surface of the seal when the valve member is in a closed configuration.

- 8 036897

The section in Fig. 5 and an enlarged part of FIG. 5A show an exemplary embodiment making it possible to obtain the aforementioned controlled leakage by which the residual fluid flow is transferred from the inlet 3 to the outlet 4 of the device. According to this embodiment, the lower surface 16 has at least one recess 30 recessed relative to the lower surface (towards the upper surface 18) so that when the valve is located abutting the perimeter surface 25 of the bore, i.e. when the valve element is brought into a closed configuration, between the surface 25 of the perimeter and the recess 30 in the passage section 20 is formed a free channel 31 through which the passage of the mentioned residual flow rate of the fluid from the inlet to the outlet of the device. The channel 31 is formed between the lower surface of the closure and the flow-through section, although the closure is in fact adjacent to the perimeter surface 25.

The lower surface 16 of the closure 15 may preferably have two recesses 30, for example, diametrically opposite to the thermostat around which the closure is attached; in this case, two channels 31 are formed for the passage of the fluid.

Essentially, the presence of a recess 30 (or a group of recesses) allows the passage of fluid even if at the same time the bottom surface 16 of the closure 15 adjacent to the passage section 20 is ensured each time, given that the entire lower surface of the closure, except recesses (or recesses, if there is more than one), can abut the surface of the perimeter and thus overlap the passage section.

Consider in this connection FIG. 5 and 5A. These figures show an annular closure 15 installed around the thermostat. Along the diameter of the bottom surface of the valve, two recesses are provided that extend from the outside to the inside of the bottom surface, up to the thermostat. The two recesses are realized by removing the valve material from the bottom surface to the top surface, that is, starting from the plane of the drawing and inward.

As a result, the state shown in the sectional view of FIG. 8 and 8A, which show the device in a closed configuration. The section is cut through the central plane of the device (as shown in FIG. 6) and thus encloses the two recesses of FIG. 5 and 5A. Therefore, in FIG. 8 and 8A, it can be seen that in the region of the recesses 30 the lower surface is at some distance from the perimeter surface 25 of the passage section 20, thereby forming channels 31 for the passage of the said residual fluid flow rate. In this case, the parts of the lower surface that are not affected by the recesses are adjacent to the surface 25 of the perimeter of the passage section 20.

In view of the above, this technical solution allows a controlled leakage of the fluid even in a closed configuration.

Likewise, the bottom surface of the closure can have a plurality of recesses, which are preferably evenly distributed over the bottom surface.

The bottom surface of the closure is preferably flat and / or smooth, except for said at least one recess (or recesses, if there is more than one).

Preferably, the depth of said at least one recess, that is, the size of the recess on the bottom surface of the closure, may be less than 3 mm, or less than 2 mm, or less than 1 mm, or less than 0.5 mm, or less than 0.2 mm.

According to possible embodiments (not shown), said leakage can be realized at additional points of the device, in particular at points in the overlap region 5.

In this regard, consider FIG. 7 and 8. The valve element 10 can be formed by a thermostatic module, or a thermostatic cartridge, and contain a glass 40, in which the thermostatic valve 11 is arranged, a head 13 with means for selecting a control temperature (i.e. a rod acting on the thermostat 12 and a compression spring ), and a thermostat 12 with a shutter 15. The glass 40 is inserted into the body 2 of the device so that the thermostatic valve is in the correct position inside the body, with a thermostat acting in the overlap area. One or more spacers are provided between the bowl 40 and the inner wall 6 of the housing 2 to ensure proper mounting of the thermostatic module or cartridge in the device housing. The device preferably contains a spacer 41, placed between the outer side of the valve element 10 (for example, the sleeve 40 of the said thermostatic module) and the inner part of the housing 2 and located in the said overlap region between the inlet 3 and the outlet 4.

Leakage of fluid for realizing said residual fluid flow rate can occur between the outer side of the valve element 10 and the inner wall of the housing 2, in particular it can occur in the absence of spacers placed between the two elements. Alternatively, leakage can occur in the area of said gasket 41; for this purpose, for example, a gasket 41 may be used, the dimensions of which do not provide a complete seal between the valve element and the body of the device and therefore allow the passage of the residual flow rate of the fluid.

Note that in the embodiment of FIG. 7 and 8, the valve element is inserted into the overlap region together with the glass 40 in the region of the inner wall 6 of the body 2 of the device, and the passage sec

- 9 036897 tion 20, in addition to what is inside the body 2, is also inside the glass 40.

In an additional possible embodiment, controlled leakage can be due to the fact that the valve, when it is adjacent to the seat formed by the surface of the perimeter of the bore section, is not allowed to provide a complete seal, that is, a defective seal is created that allows fluid to pass in a volume equal to the said residual flow rate.

In an exemplary embodiment (not illustrated), the device housing comprises a bypass channel or passageway connecting the inlet and outlet and configured to transmit said residual fluid flow rate in each operating configuration of the valve element, in particular in a closed configuration.

Preferably, the bypass duct is formed in or near the overlap region. In particular, the bypass channel is preferably formed in or near the passage section. Even more preferably, the bypass channel is formed inside said housing in the region of the thermostatic valve, in particular in the region of the thermostat and / or the shutter. Preferably, the bypass passage is configured to transfer fluid present immediately upstream of the thermostatic valve towards the outlet at a flow rate equal to said residual fluid flow rate.

Preferably, said residual fluid flow rate from inlet to outlet is present in each operating configuration of the valve element.

Preferably, the bypass passage used to pass said residual flow rate is an alternative embodiment of said controlled leakage, regardless of the point within the housing at which the leak occurs or the procedure for obtaining the leak.

In particular, the bypass channel is preferably an alternative to the recesses on the bottom surface of the valve, or it functions independently of the operating configuration in which the valve element is located. In this case, in the presence of a bypass channel, the valve can provide complete sealing of the bore when the valve element is in a closed configuration.

The body 2 of the device is preferably made in one piece or in a monoblock structure. The device body 2 is preferably obtained in a single casting process, preferably by casting a metallic material such as brass.

The following describes a heating system 100 according to the invention. In this regard, consider FIG. 1, which schematically shows an example of a system.

The heating system 100 comprises at least one radiator pipe 70 intended to be installed in the floor area and configured to heat the space. Radiator tube 70 extends between an inlet end 71 that is intended to be fluidly connected to a high temperature fluid source so as to receive high temperature fluid from it, and an outlet end 72 that is intended to be connected to a heat generator so as to receive a low temperature fluid. Wednesday. Between the upstream end and the downstream end, the radiator tube 70 comprises a coiled portion 75 configured to transfer radiant heat outward from the fluid flowing therein.

As shown in FIG. 1, the source of high temperature fluid may be a supply line from a boiler or a high temperature water circuit 101, and the low temperature return may be a return line 102 to a boiler.

The inlet end 71 is preferably directly connected to the high temperature fluid source without intermediate valves or regulators, i.e., it branches off directly from the high temperature circuit 101.

The device 1 is preferably located downstream of the coiled portion 75 and upstream of the outlet end 72 of the radiator tube so as to block the flow of fluid in the tube. The inlet 3 of the device 1 receives a fluid coming from the twisted part 75, the device 1 transmits the flow rate of this fluid to the outlet 4, taking into account the operating configuration of the valve element 10, while the outlet 4 is connected to the outlet end 72 of the radiator tube 70.

As shown in FIG. 1, the heating system 100 is preferably a space heating system and, in addition to the radiator pipe 70 in the floor area, it also contains a high temperature system portion 90. In this case, the high-temperature part 90 of the system branches off directly from the high-temperature water circuit 101, feeds one or more thermosyphons 91 and then returns directly to the return line 102 to the boiler.

More generally, the system can contain a group of branches and a group of sections, for example, each of which is intended for a separate room within a building or apartment.

As shown in FIG. 1 and enlarged in FIG. 2, the twisted portion 75 is preferably in the form of a double helix in plan, so that the beginning 76 and the end 77 of the twisted portion are adjacent to each other, i.e. close to each other, also outside the double helix itself. According to this configuration, the double helix comprises a first helix 78, or an outgoing helix, extending from the start 76 of the coiled portion to the center point 80 of the coiled portion, and a second coil 79,

- 10 036897 or a return spiral extending from the center point 80 to the end 77 of the twisted part; the center point connects the first coil 78 and the second coil 79 and is shared between them.

The first spiral 78 and the second spiral 79 are desirably arranged in a double helix so that they alternate or alternate with respect to each other; as a result, from the outer to the inner part of the double helix, an alternation of turns and bends of the first helix and the second helix is formed.

This double helical cavity tube arrangement allows for optimal system performance in combination with the regulator 1. In fact, when the system is on, with the device 1 positioned at the end of the radiator tube 70, water enters the inlet end 71 at high temperature, filling the coiled portion 75; this leads to the transition of the device 1 to a closed configuration, and no more water is passed, except for the mentioned residual flow rate. This is because water is an incompressible fluid and thus it is clear that to meet the hydrodynamic equilibrium requirements, it is impossible to admit more water into the coiled portion 75 until an equal flow rate of water emerges from the same coiled portion.

As the chimney gradually cools down (because it transfers heat to the room), the temperature in the coiled section 75 drops and therefore water with a temperature lower than the control temperature to which the valve element was set is supplied to the inlet of the device 1. This opens the device, which allows a certain amount of (chilled) water to escape from the outlet 4, thereby determining the tolerance of an equal amount of high temperature water in the inlet end 71 of the radiator pipe.

In general, during operation, the flow in the chimney is very slow, but this makes it possible to maintain the desired temperature in the space.

In this context, the double helical shape imparted to the coiled portion 75 allows the bend or turn (which is part of the first coil 78, the outgoing coil) to have a maximum temperature outside the coiled portion itself; along it, if you follow in the direction of the inside of the twisted part, there is a bend or turn of the minimum temperature (that is, the last bend that is part of the second spiral 79, the return spiral). You can then proceed in the same way to the center point 80 of the twisted part with alternating bends of the outgoing spiral with decreasing temperature and bends of the return spiral with increasing temperature (it should be noted that this sequence is described as going from outside to inside). In this way, the shape of the double helix makes it possible to balance the temperature (decreasing from the outside to the inside) present in the outgoing coil with the temperature (decreasing from the inside to the outside) present in the return coil, and obtain the most uniform floor temperature distribution possible.

In one possible embodiment, shown in FIG. 1-8, the heating system 100 further comprises a thermostatic valve 50 for thermostatically controlling the space, preferably a thermostatic head installed along the radiator pipe 70 at a point downstream of the regulator 1. The thermostatic valve 50 for controlling the temperature of the space is configured to allow selection the desired temperature for the space in which the heating system is installed, and therefore adjusting the flow rate of the fluid circulating in the radiator pipe 70 depending (or proportionally) on the difference between the temperature recorded in the space and the desired temperature for that space. Essentially, this embodiment comprises the use of both device 1 and a thermostatic valve 50. In fact, if device 1 is responsible for controlling the flow of water into the radiator pipe 70 when the supply water is at a high temperature, ensuring the correct temperature in the pipe without damaging the floor covering , the user generally wants to be able to set and control the actual temperature in the room where the radiator tube is operating. Indeed, the comfort in the room is determined by the ability to control the perceived room temperature, not the temperature of the water circulating in the coiled section 75 (the latter temperature has a technical function related to the heat radiated for heating).

In other words, two independent temperature control means are obtained: one for controlling the water in the radiator pipe, implemented by device 1, the other for space control, implemented by means of a thermostatic valve 50.

FIG. 1-8 show a device 1 in combination with a valve 51 which can be thermostatically controlled and to which a thermostatic head 50 can be connected, either mounted directly on the valve or remotely. In this case, the housing 2 of the device 1 and, accordingly, the housing 52 of the valve 51, which can be thermostatically controlled, can be manufactured in one piece. The device 1 and the valve 51, which can be thermostatically controlled, are housed within a special box 55 of a type known in the art.

FIG. 9 shows another embodiment which provides for the use of a control device 1 within a heating unit 95 inserted into a drawer or cabinet and built into, for example, a wall compartment, in accordance with procedures known in the art. The heating unit contains many components including pipes, manifolds, valves, mounting brackets, etc. These elements are responsible for the management of many areas of the heating system.

- 11 036897 threads, which may be of a mixed type and contain sections or branches operating at high temperatures (with thermosyphons), as well as areas or branches operating at low temperatures (with floor pipes). FIG. 10 and 11 show the structure of a device 1 contained in a heating unit 95. The device is identical to that of FIG. 1-8 and, as can be seen in the sectional view of FIG. 11 and 11A, has a recessed seal that allows for leakage through which the residual flow rate is transferred from the inlet to the outlet when the device is in a closed configuration.

In general, in the embodiment of FIG. 1-8 and the embodiment of FIG. 9-11, the device 1 of the invention functions inside boxes or closed boxes, which have the problem described above and known in the art, that is, the technical problem of overheating of various elements, including a regulator for controlling the limit temperature.

However, the solution underlying the invention allows for proper operation of the device even under these conditions, due to the residual flow rate of the fluid that passes through even in a closed configuration. Although it is preferable to have a low flow rate, for example 3-5 l / h, this residual flow rate is sufficient to empty the interior of the housing (ie, the overlap region) near the temperature sensitive valve element even when the latter is closed. As such, even when the device is closed, it is possible for fluid to pass through, which allows a small amount of water to circulate, rather than stagnating at the inlet, subject to superheating typical of environments inside boxes and heating installations. By preventing this stagnation of overheated water at the inlet of the device 1, it is possible to avoid the suspension of the device; in the prior art, the suspension of operation of the device occurs when the valve element perceives a high temperature (above the limit temperature at which it was set), even if the radiator pipe has cooled down. By discharging a low flow rate of water to the outlet, the device is always wetted with water having the actual temperature present in the radiator pipe, on the basis of which the device should, when necessary, give a command to draw new hot water entering the radiator pipe.

It should be noted that the residual flow rate retained by the device even in a closed configuration - for example, by the said leakage, which determines the passage through the device of water leaving the radiator pipe (and, as a result, the tolerance of an equal amount of high-temperature water) - is maintained at this level that this does not affect the correctness of the system. From the point of view of regulating the system for space heating purposes, the regulating device can in any case be considered closed, even if the residual flow rate remains. This is due to the fact that the residual flow rate is preferably a low flow rate, which does not change the overall temperature in the cavity tube and does not lead to system or control malfunctions; there is essentially no effect on the operation of the system, but local advantages are obtained with respect to the operation of the control device 1. This is the case even when the radiator tube heating process is stopped. In this case, the residual flow rate has no real effect on heating the floor or the room where the pipe is located.

In any case, the presence of the thermostatic valve 50 in combination with the device 1 prevents any undesirable consequences of the passage of the residual flow rate in a closed configuration. This is because even if the residual flow rate could theoretically increase the radiation effect, the thermostatic valve will in any case ensure that the space is regulated to the desired temperature.

The method for regulating heating systems that is the object of the invention can be implemented preferably, but not exclusively, with a device 1 of the type described above. In this case, the method may generally correspond to the operation and installation of the heating system including the control device 1. The method includes positioning the radiator tube as described above and attaching the control device 1 to it in accordance with the procedures described above.

The method further comprises the step of circulating a fluid in said radiator tube, in which the flow rate of the fluid flowing from the inlet to the outlet of the regulating device through the overlap region depends on the temperature difference between the perceived temperature of the fluid at the inlet and the control temperature at which the valve is configured. element; this means that the flow rate passing from the inlet to the outlet of the regulating device and transported to the outlet end of the radiator tube is equal to the incoming flow rate at the inlet end of the radiator tube.

The method further provides that the step of circulating the fluid in said radiator pipe comprises the step of maintaining a residual, greater than zero, flow rate of the fluid transmitted from the inlet to the outlet of the control device when the valve element is in a closed configuration.

Similar to that described above, in the step of maintaining the residual fluid flow rate, the residual fluid flow rate is preferably 2 to 8 l / h, or

- 12 036897 is from 3 to 6 l / h, or ranges from 3.5 to 5 l / h.

The stage of maintaining the residual flow rate is a stage that makes it possible to remove the water stopped at the inlet of device 1 before it can overheat, and to allow new water to be supplied there from the end of the radiator pipe, so that the valve element registers the correct temperature of the water present precisely at end of the pipe.

While various embodiments of the invention are contemplated as described above, the step of maintaining the residual flow rate should be performed in a suitable area of the device, i.e. near the valve element (i.e. around or near the thermostat and the shutter) where the device senses temperature and where in the prior art there is a pause problem when the device is closed.

Thus, the implementation of the invention provides for various modifications and variations, each of which does not depart from the essence of the invention, so that the features disclosed above may be replaced by their technical equivalents.

The invention has important advantages. First of all, the invention overcomes at least some of the above-mentioned disadvantages of the prior art.

In addition, the device according to the invention makes it possible to efficiently connect the radiant floor pipe to the high temperature circuit, allowing correct control of the operating temperatures and flows within the pipe.

In addition, the device according to the invention is able to function correctly inside heating installations or near heating components operating at high temperatures.

The device according to the invention is also characterized by a high degree of versatility and can be adapted to a wide variety of types of heating systems.

The invention can be applied with particular advantage when it is necessary to implement a new section of the underfloor heating system in addition to the existing system operating at high temperatures, for example, because it is a system in which radiators or thermosyphons are used.

In addition, the device according to the invention is characterized by a high level of operational reliability, high resistance to damage and failure, as well as simple and fast maintenance.

Finally, the device according to the invention is characterized by a competitive cost, simple and rational design.

Claims (8)

1. A regulating device (1) for regulating heating systems, comprising: the body (2) of the device, provided with at least one inlet (3) intended for connection to the line so as to receive a fluid from it, an outlet (4) intended for connection to the corresponding line so as to direct the fluid into it, and an overlap area (5) within said housing (2) located between said inlet (3) and said outlet (4) and connecting them so that it is possible to selectively establish a fluid communication between said inlet and said outlet; valve element (10) at least partially accommodated inside the housing (2) and functioning in the specified area (5) of overlap, while the valve element (10) is configured to function in a variety of operating configurations so as to change the flow rate of the fluid flowing from said inlet (3) to said outlet (4) through said overlap region (5), depending on the temperature difference between the perceived temperature of the fluid at said inlet and a control temperature at which the valve element can be configured; wherein said plurality of operating configurations comprise at least one maximum opening configuration, in which the maximum flow rate of the fluid flowing from said inlet to said outlet, and a closed configuration corresponding to the state in which said recorded temperature of the fluid at the inlet is equal to said reference temperature or above the mentioned control temperature; wherein in said closed configuration there is a residual flow rate of the fluid transmitted from said inlet to said outlet, said residual flow rate being greater than zero, said valve element (10) comprises a thermostatic valve (11) inserted into said housing (2) and comprising a movable shutter (15) made with the possibility of approaching and removing with respect to the passage section (20) formed in said overlap region (5) so as to change said flow rate of fluid flowing from said inlet (3) to said outlet (4), in accordance with said plurality of operating configurations, wherein said shutter (15) approaches the passage section while decreasing the difference between the sensing - 13,036897 the set temperature of the fluid at the inlet and the mentioned control temperature, decreasing the mentioned flow rate, and moves away from the passage section with an increase in the difference between the perceived temperature of the fluid at the inlet and the said control temperature, increasing the said flow rate, and in the said closed configuration there is fluid leakage between said seal (15) and said passage section (20), said leakage determines the passage of said residual fluid flow rate from said inlet (3) to said outlet (4), wherein in said closed configuration there is a controlled leakage of fluid medium on the mentioned valve element (10) in the area (5) of the overlap. 2. Device (1) according to claim 1, wherein said residual fluid flow rate transmitted from said inlet to said outlet in said closed configuration is 2 to 8 l / h, or wherein said residual fluid flow rate from said inlet to said outlet in said closed configuration is 3 to 6 l / h, or in which said residual fluid flow rate transferred from said inlet to said outlet in said closed configuration is 3.5 to 5 l / h 3. A device according to any one of claims 1 and 2, in which the valve element (10) comprises means for selecting said control temperature so that when the fluid entering said inlet reaches or exceeds this control temperature, the valve element is transferred to said closed configuration. 4. Device (1) according to any one of claims 1 to 3, in which the thermostatic valve (11) comprises a temperature-sensitive thermostat (12), wherein said thermostat is configured to change its dimensions depending on the temperature it perceives, said shutter (15) is associated with or attached to said thermostat, and / or in which thermostat (12) the thermostat is inserted axially into said housing (2) so as to occupy at least partially said overlap region (5), and is made with the ability to change its own length depending on the temperature of the fluid at said inlet, perceived by the thermostat itself, and / or in which the thermostat increases in length with an increase in the perceived temperature, bringing the said gate closer to the passage section, and decreases in length with a decrease in the perceived temperature, removing the mentioned shutter from the passage section. 5. Device (1) according to claim 4, wherein the shutter (15) is movable so as to abut said passage section (20) when the valve element (10) is brought into said closed configuration, and / or in which the shutter (15) has a generally disc or ring shape and is located around the thermostat, and / or in which the shutter has a lower surface (16) facing said passage section (20) formed in the overlap region (5), and preferably having a rounded the shape of the head part, and the upper surface (18) opposite to the mentioned lower surface, while the said lower surface (16) moves away from the said passage section with decreasing thermostat length, approaches the passage section with increasing thermostat length and moves so as to adjoin the preferably a ring shape of the surface (25) of the perimeter of said passage section (20) when the valve element is brought into a closed configuration and / or in which the lower surface (16) has at least one recess (30) recessed into the lower surface so that when the shutter is adjacent to the perimeter surface (25) of the passage section (20), between the perimeter surface (25) and said at least one recess (30) in said of the passage section (20), a free channel (31) is formed, through which the mentioned residual flow rate of the fluid medium flows from the inlet (3) to the outlet (4) of the device. 6. Heating system (100) comprising: at least one radiator pipe (70) intended to be installed in the floor area and made with the possibility of heating the space, while the radiator pipe (70) passes between the inlet end (71) intended for fluid connection with a source of high temperature fluid so to receive from it a high-temperature fluid, and an outlet end (72) intended for fluid communication with a heat generator so as to receive a low-temperature fluid therein, wherein the radiator pipe (70) contains between said inlet end and said outlet end a twisted part (75) configured to transmit radiant heat outward from a fluid flowing therein; at least one regulating device (1) for regulating heating systems in accordance with any one of claims 1 to 5, located downstream of said twisted portion (75) and upstream of said outlet end (72) of the radiator pipe, so, in order to shut off the flow of fluid flowing in said pipe, while the inlet (3) of the control device receives the fluid coming from the said twisted part (75), the device (1) transfers the flow rate for this fluid to the outlet (4) taking into account the working configuration of the valve element (10), wherein the outlet (4) of the device is fluidly connected to the said outlet end (72) of the radiator tube. - 14 036897 7. System (100) according to claim 6, comprising a thermostatic head (50) for controlling the temperature of the space along said radiator tube (70) at a point downstream of said control device (1), wherein said thermostatic head (50) for the temperature control in the space is configured to select the desired temperature for the space in which the heating system is installed and, thus, to adjust the flow rate of the fluid circulating in the radiator pipe, depending on the difference between the temperature recorded in the space and the said desired temperature in space, and / or in which the twisted part (75) in the plan view has the shape of a double helix, so that the beginning (76) and the end (77) of this twisted part (75) are located close to each other and outside the double helix itself , and / or in which said double helix comprises a first helix (78), or an outgoing helix extending from the beginning (76) of the coiled portion to the central point (80) of the twisted part, and the second spiral (79), or a return spiral passing from the center point (80) to the end (77) of the twisted part, and said center point (80) connects the first spiral and the second spiral and belongs to them together, and in which said first spiral (78) and second spiral (79) are arranged in a double spiral so that they alternate or alternate with each other, thereby forming from the outside to the inside of the double spiral alternating turns and bends of the first spiral and the second spiral. 8. A method for regulating heating systems (100), comprising stages at which: at least one radiator pipe (70) is installed, intended for installation in the floor area and made with the possibility of heating the space, while said radiator pipe (70) is placed between the inlet end (71) intended for fluid connection with a source of high-temperature fluid medium so as to receive from it a high-temperature fluid, and an outlet end (72) intended for fluid connection with a heat generator so as to receive a low-temperature fluid therein, and said radiator pipe (70) contains between said inlet end and an outlet the end of the twisted part (75), made with the possibility of transferring outward radiant heat from the fluid flowing in it; install at least one regulating device (1) for heating systems according to any one of claims 1-7, placing it downstream of said twisted part (75) and upstream of said outlet end (72) of the radiator tube (70) so as to block the flow of fluid flowing in said radiator pipe, while the inlet (3) of the control device receives fluid coming from said twisted part (75), while the device (1) transfers the flow rate of this fluid to the outlet ( 4) the device, taking into account the operating configuration of the valve element (10) of the device, while the outlet (4) of the device (1) is connected by a fluid medium to the said outlet end (72) of the radiator tube (70); provide the circulation of the fluid in the said radiator tube (70), at which the flow rate of the fluid flow passing from the inlet (3) to the outlet (4) of the device (1) through the said overlap region (5) depends on the temperature difference between the perceived fluid temperature medium at the said inlet and the control temperature at which the valve element is configured, while the flow rate passing from the inlet (3) to the outlet (4) of the device (1) and transmitted towards the said outlet end (72) of the radiator tube (70) is equal to the incoming flow rate at said inlet end (71) of the radiator tube (70), wherein said step of circulating fluid in said radiator tube (70) comprises the step of maintaining greater than zero residual flow rate of fluid transmitted from inlet (3) to the outlet (4) of the device (1) when the valve element (10) is in the said closed configuration, and / or at the same time at the said stage of maintaining the residual flow fluid flow rate, the residual fluid flow rate is 2 to 8 l / h, or 3 to 6 l / h, or 3.5 to 5 l / h.